They shall be my people - I will renew my covenant with them, for they will return to me with them whole heart.
The complete fulfillment of this prophecy belongs to the Christian Church. There is a close analogy between Jeremiah at the first destruction of Jerusalem and our Lord at the second. There the good figs were those converts picked out by the preaching of Christ and the Apostles; the bad figs were the mass of the people left for Titus and the Romans to destroy.
Acknowledge for their good - Specially their spiritual good. Put a comma after Chaldaeans.
That dwell in the land of Egypt - Neither those carried captive with Jehoahaz into Egypt, nor those who fled there, are to share in these blessings. The new life of the Jewish nation is to be the work only of the exiles in Babylon.